New lithium-sulfur battery could charge your phone for five days, researchers say
By Rob Picheta, CNN Business
Updated 11:37 AM EST, Mon January 06, 2020


London(CNN Business)Australian researchers claim they have developed a battery that can keep a smartphone charged for five days or power an electric car for 1,000 kilometers (over 600 miles).

If the technology comes to be used widely, it would represent a significant breakthrough in the hunt for greener, more efficient energy.

The team from Monash University in Melbourne says the lithium-sulfur battery it has created is the "world's most efficient," and can outperform traditional batteries by four times.


Most commercial batteries are lithium-ion, but lithium-sulfur alternatives have long been attractive because of their higher energy density and ability to power objects for longer.

However, lithium-sulfur batteries tend to have a far shorter lifespan. They are used in some aircraft and cars, but previous attempts to bring them to mass production and phase out lithium-ion batteries have failed.

According to battery experts The Faraday Institution, the widespread use of lithium-sulfur batteries faces "major hurdles" stemming from sulfur's "insulating nature," and degradation of the metallic lithium anode.

The team in Australia, whose research was published in the journal Science Advances, reconfigured the design of sulfur cathodes so that they are able to withstand higher stress loads without seeing a drop in overall performance.

Their work "will revolutionise the Australian vehicle market and provide all Australians with a cleaner and more reliable energy market," lead researcher Professor Mainak Majumder said in a press release.

The group, whose work received funding from the Australian government, has patented the new battery and further testing is scheduled for later this year.

"This approach not only favours high performance metrics and long cycle life, but is also simple and extremely low-cost to manufacture, using water-based processes, and can lead to significant reductions in environmentally hazardous waste," Matthew Hill, who also worked on the team, said.

However, the there are some challenges and limitations associated with the technology.

Secretive energy startup backed by Bill Gates achieves solar breakthrough

New York(CNN Business)
A secretive startup backed by Bill Gates has achieved a solar breakthrough aimed at saving the planet.

Heliogen, a clean energy company that emerged from stealth mode on Tuesday, said it has discovered a way to use artificial intelligence and a field of mirrors to reflect so much sunlight that it generates extreme heat above 1,000 degrees Celsius.

Essentially, Heliogen created a solar oven — one capable of reaching temperatures that are roughly a quarter of what you'd find on the surface of the sun.

The breakthrough means that, for the first time, concentrated solar energy can be used to create the extreme heat required to make cement, steel, glass and other industrial processes. In other words, carbon-free sunlight can replace fossil fuels in a heavy carbon-emitting corner of the economy that has been untouched by the clean energy revolution.

"We are rolling out technology that can beat the price of fossil fuels and also not make the CO2 emissions," Bill Gross, Heliogen's founder and CEO, told CNN Business. "And that's really the holy grail".
https://www.google.com/amp/s/amp.cnn.com/cnn/2019/11/19/business/heliogen-solar-energy-bill-gates/index.html?espv=1

Secretive energy startup backed by Bill Gates achieves solar breakthrough

New York(CNN Business)
A secretive startup backed by Bill Gates has achieved a solar breakthrough aimed at saving the planet.

Heliogen, a clean energy company that emerged from stealth mode on Tuesday, said it has discovered a way to use artificial intelligence and a field of mirrors to reflect so much sunlight that it generates extreme heat above 1,000 degrees Celsius.

Essentially, Heliogen created a solar oven — one capable of reaching temperatures that are roughly a quarter of what you'd find on the surface of the sun.

The breakthrough means that, for the first time, concentrated solar energy can be used to create the extreme heat required to make cement, steel, glass and other industrial processes. In other words, carbon-free sunlight can replace fossil fuels in a heavy carbon-emitting corner of the economy that has been untouched by the clean energy revolution.

"We are rolling out technology that can beat the price of fossil fuels and also not make the CO2 emissions," Bill Gross, Heliogen's founder and CEO, told CNN Business. "And that's really the holy grail".
https://www.google.com/amp/s/amp.cnn.com/cnn/2019/11/19/business/heliogen-solar-energy-bill-gates/index.html?espv=1

https://twitter.com/CNN/status/1197396458271596545?s=19
Chalmers University of Technology in the Swedish city of Gothenburg, scientists have created a specialized liquid that can absorb solar energy and store it for as long as 18 years as a thermal fuel. The fluid works like a rechargeable battery, but instead of electricity, sunlight goes in and heat comes out when it's needed.

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